# TB Spectrogram vs Piano for Singers

The clearest difference is rating: Piano for Singers at 5.0 against TB Spectrogram's 4.4. Piano for Singers also leads on review sentiment (100% vs 71%). TB Spectrogram's advantage is in-app purchases (none vs 2) and ratings volume (50 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Piano for Singers sells 2 in-app purchases, starting at $0.99 per month. TB Spectrogram asks for nothing beyond the download.

Piano for Singers holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: TB Spectrogram has 50 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 71% of TB Spectrogram's written reviews are positive against 100% of Piano for Singers's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | TB Spectrogram | Piano for Singers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (50 ratings)](https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/piano-for-singers/id6753043735/reviews)** |
| Number of ratings | **50** | 4 |
| Positive reviews | 71.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Paid | **Freemium** |
| Size | 15 MB | 165 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ToneBoosters](https://appshunter.io/developer/1472446500) | [Sirin Sings LLC](https://appshunter.io/developer/1842251924) |

## What reviewers say

### TB Spectrogram

[App page](https://appshunter.io/ios/app/tb-spectrogram/id1530170842)

This app provides real-time audio analysis with a spectrogram, spectrum analyzer, and goniometer. It can be used as a standalone application or as an AUv3 plugin within compatible music production hosts. Visualize your audio in detail with adjustable settings and multiple display options.

**Highlights:** Real-time spectrogram and spectrum analysis, Goniometer for stereo signal analysis, AUv3 plugin compatibility, Adjustable frequency and time resolution, Customizable color themes, On-screen piano keyboard mapping

**Features:** Vision Pro support

**In-app purchases:** none


### Piano for Singers

[App page](https://appshunter.io/ios/app/piano-for-singers/id6753043735)

This app provides a responsive practice tool for singers and voice teachers. It offers two modes: Free Play for improvisation and Auto-Piano for practicing scales, arpeggios, and riffs in any key. It's designed for warm-ups and key-by-key practice with a fast, distraction-free interface.

**Highlights:** Free Play mode, Auto-Piano mode, Scales and arpeggios, Customizable tempo, Distraction-free interface, Works on iPhone and iPad

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Piano for Singers – Supporter | $0.99 | per month |
| Piano for Singers – Supporter | $9.99 | per year |


## Frequently asked questions

### Is TB Spectrogram free?

TB Spectrogram is free to download, with no in-app purchases.

### Is Piano for Singers free?

Piano for Singers is free to download, with in-app purchases available.

### Which has better reviews, TB Spectrogram or Piano for Singers?

Piano for Singers is rated higher. TB Spectrogram averages 4.4 out of 5 from 50 ratings, while Piano for Singers averages 5.0 from 4 ratings.

### Do TB Spectrogram or Piano for Singers have ads?

Neither TB Spectrogram nor Piano for Singers shows ads.

### Which is updated more often, TB Spectrogram or Piano for Singers?

TB Spectrogram ships an update every 3 weeks, and Piano for Singers every 3 weeks. Most recently, TB Spectrogram was updated on October 14, 2026 and Piano for Singers on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*